package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeEditDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.service.EmployeeService;
import com.sky.vo.EmployeePageQueryVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //对前端传递来的password进行MD5加密
         password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /*
     * 修改密码
     * */
    @Override
    public void updateEmloyeePassword(EmployeeEditDTO employeeEditDTO) {
        String oldPassword = employeeEditDTO.getOldPassword();
        String newPassword = employeeEditDTO.getNewPassword();
        oldPassword = DigestUtils.md5DigestAsHex(oldPassword.getBytes());
        newPassword = DigestUtils.md5DigestAsHex(newPassword.getBytes());

        employeeEditDTO.setOldPassword(oldPassword);
        employeeEditDTO.setNewPassword(newPassword);

        employeeMapper.updateEmloyeePassword(employeeEditDTO);
    }

    /*
    * 新增员工
    * */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();

        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);

        //设置密码
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        //设置状态
        employee.setStatus(StatusConstant.ENABLE);

        //设置createTime updateTime
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//
//        //set createUser updateUser
//        employee.setCreateUser(BaseContext.getCurrentId());
//        employee.setUpdateUser(BaseContext.getCurrentId());

        //调用持久层插入
        employeeMapper.insert(employee);

    }

    @Override
    public void updateStatus(Integer status, Long id) {

        employeeMapper.updateEmloyeeStatus(status,id);

    }

    @Override
    public EmployeePageQueryVO list(EmployeePageQueryDTO employeePageQueryDTO) {


        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());

        Page<Employee> page = employeeMapper.list(employeePageQueryDTO);

        //total
        long total = page.getTotal();

        //records
        List<Employee> records = page.getResult();

        return new EmployeePageQueryVO(total,records);
    }

    @Override
    public Employee getEmployeeById(String id) {
        return employeeMapper.getEmployeeById(id);
    }

    @Override
    public void update(EmployeeDTO employeeDTO) {

        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
//        employee.setUpdateUser(BaseContext.getCurrentId());
//        employee.setUpdateTime(LocalDateTime.now());

        employeeMapper.update(employee);
    }

}
